Road machine



J. B. JARMIN ROAD MACHINE Filed Dec.' 21, 1936 l2 Sheets-.Sheet 1 .www

Jan. 10, 1939. J, B. JARMIN ROAD MACHINE Filed Dec. 2l, 1936 2 Sheets-Sheet I?,

i 25' 3mm Patented Jan. 10, 1939 UNITED STATES PATENT OFFECE ROAD| MACHINE Delaware Application December 21, 1936, Serial No. 116,873

3 Claims.

This invention relates to new and useful improvements in road machines.

One object of the invention is toprovide a road machine frame wherein an improved single longitudinal connecting member is utilized for connecting the front and rear ground wheels of said machine.

An important object of the invention is to provide an improved road machine having a longitudinal connecting member constructed of an H-bearn or I-beam, whereby the member may be constructed of one piece and bent to any desired shape which eliminates elbows, or other connections, and adds to the rigidity or stability of the machine.

Another object of the invention is to provide an improved road machine including a longitudinal reach member which is secured at one end to the rear platform of the machine in such a way that the longitudinal axis of the reach member is at all times, at a right angle to the longitudinal axis of the rear axle of the machine, whereby danger of twisting strains or side thrust, due to the machine operating on a grade or ineline, impairing the efficiency of the machine is eliminated. i

Still another object of the invention is to provide an improved means for securely fastening the end of a longitudinal reach member to the rear platform of a road machine, whereby the structure is strengthened and the reach member firmly held in proper position.

A construction designed to carry out the invention will be hereinafter described, together with other features of the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings, in which an example of the invention is shown, and wherein:

Figure 1 is a side elevation of a road machine, constructed in accordance with the invention,

Figure 2 is a partial plan view,

Figure 3 is an enlarged side elevation of the rear end of the reach member and showing its connection to the rear platform,

Figure i is an enlarged longitudinal sectional view of the parts shown in Figure 3, and taken on the line tl-f'l of Figure 2, and

Figure 5 is an enlarged, transverse, vertical, sectional View, taken on the line 5--5 of Figure 1.

Figure 6 is a perspective view of the rear platform.

In the drawings, the numeral I9 designates a flanged reach member which forms the main support of the road machine frame. This member may be an I-beam or an H-beam but is preferably the latter because an H-beam is provided with wider flanges more suitable for this particular; member. The reach member m-ay include substantially horizontal section A and a forwardly inclined section B which is bent therefrom. The forward end of the inclined section B is supported on the front running gear H of the road machine in any suitable manner, as is now common in this art. A sub-frame I2 has its forward end pivoted to the running gear il, while its rear end is suspended by a hanger I3 as is the common practice. The upper end of the hanger I3 is pivoted to an arm il', which is hinged on a bracket l2' extending outwardly from a collar I3 which is clamped, bolted or otherwise secured to the member I0. A suitable scraper blade I4 is carried by the sub-frame being mounted thereon in any suitable way.

The rear end of the reach member or beam IB is bent upon itself so as to incline downwardly as shown at I5 and a base plate I6 having a substantially rectangular shape is welded to this end of the beam. The plate I 6 extends in a substantially horizontal plane. It is noted that by constructing the member Iii of an I- beam or an H-beam, it is possible to` bend said member upon itself and thus eliminate the use of elbows or other connections for making the comparatively sharp turn between the horizontal portion A and the inclined portion I5 of said member. If desired, the beam IEl may be strengthened and braced by side plates Il' which extend from the rear end of the forwardly inclined portion B to the base flange t5, one of the plates being secured on each side of the beam between the outwardly directedanges thereof. The plates are secured to said flanges by welding or other means.

The base plate I6 is larger than the end of the reach member or beam ill so that a peripheral flange I6 is formed around the end of said member. The base plate I6 sets within a recess i8 formed in the top of the rear platform E9 of the machine. The recess I8 extends longitudinally of the platform, whereby when the plate I6 is disposed therein, lateral displacement of said plate is prevented. Bolts 2G pass through the base plate I6 and through the top of the platform I9 and receive nuts 2l, whereby the base plate is securely fastened to the platform which rigidly fastens the rear end of the beam I to said platform. To further secure the rear end of the reach member or beam I0 to the platform, said platform is provided with a forwardly directed, flanged extension 22. A vertical channel member 23 has its lower end secured to the forward end of the extension 22, with the flanges 23' of said member overlying the sides of the extension and being welded thereto. The upper end of the channel member is formed with a cut-out or recess 24 which receives the beam I0, whereby the extreme upper end of the member 23 extends contiguous to the reinforcing side plate I'I. This end of the member 23 is welded, or otherwise suitably fastened to the side plate II and it will be obvious that with this structure a rigid brace is provided for more firmly fastening the rear end of the reach or beam I0 to the platform I9.

The sides .and rear of the platform I9 are formed with an integral depending apron 25, the lower end of which rests on horizontally extending angle bars 26. An outwardly extending ange 25 is formed at the lower end of the apron 25 and bolts 2'I pass through this fiange and through the angle bars 26 and receive nuts 28 on their lower ends, whereby the platform is securely fastened to the angle bars. The transversely extending rear axle 29 is supported -on the angle bars 26. The axle is preferably substantially square in cross-section and is provided with horizontally directed, longitudinal flanges 29' on each side thereof. The iianges, of course, rest upon the upper end of the angle bars and straps 3B and retaining angles 3l (Figure 3) have their ends overlying the flanges 29 and are bolted to the supporting angle bars 26, whereby the axle is secured on said bars. The outer ends of the axle 29 `have the usual rear ground wheels 32 secured thereto and with such structure, it will be obvious that the wheels support the rear platform I9 and also the rear end of the reach member or beam I0.

It is noted that the recess I8 which extends longitudinally in the to-p of the platform I9 is disposed at substantially a right angle to the longitudinal axis of the axle 29. Therefore, when th-e rear end of the beam II] is securedy within this recess, said beam has its longitudinal axis at substantially a right angle to the rear axle 29. Since the base plate I6 is resting within the recess I8, it will be seen that the rear end of the beam is held in its proper position at all times and any twisting strains or sidethrusts which may occur due to the rear ground wheels 32 riding on an incline or grade, cannot cause the beam Il] to move out of its proper position. In other Words, the positioning of the base plate IG which is welded or otherwise secured to the beam I9, within the recess I8 provides a positive means for holding this rear end of the beam in a fixed position on the platform I9.

As before stated, it is preferable to construct the reach member I0 of an H-beam because of the increased width of the flanges of said beam. However, an I-beam having smaller flanges, could be employed. In either case, the beam may be necessary turns or curves in said member.

readily bent to conform to any desired shape and thus, it is possible to construct the reach member of a single piece without the use of any elbows or other connection in order to make the Obviously, by making the reach member of a single beam or section, the strength of the frame is greatly increased. Also the manufacturing is made easier and the cost reduced. It is pointed out that an H-beam or an I-beam has been found particularly adaptable because the same gives the necessary strength and rigidity to the frame without obstructing the operators view of the blade Ill. It is pointed out that although the side plates I'I have been shown to reinforce the rear portion of the beam I0, these side plates could, if desired, be eliminated and a suitable frame constructed without the use of these plat-es.

What I claim and desire to secure by Letters Patent, is:`

1. A road machine including, a front wheel assembly, a rear wheel assembly including a platform with a longitudinal recess formed in its top, alongitudinal reach member formed with flanges on its longitudinal sides pivotally secured to the front wheel assembly, a base plate secured to the rear end of said reach member and forming a peripheral flange therearound, means to fasten said peripheral flange in said recess of said platform, and a working tool suspended from said reach member between the wheel assemblies thereof.

2. In a road machine, a longitudinal reach member having a downwardly inclined portion at its rear end, a front support for said reach member, a rear support for said reach member including an axle, relatively abutting members associated respectively with said inclined portion of said reach member and with said axle, one of said relatively abutting members being a plate element and the other having a recess into which said plate element is fitted to prevent relative displacement of said r-each member and axle longitudinally of said axle, and means retaining said plate member in said recess.

3. In a road machine, a longitudinal reach member having a Vdownwardly inclined portion at its rear end, a front support for said reach member, a rear support for said reach member including an axle, and connecting means between said inclined portion of said reach member and said axle adapted to prevent axial and horizontal angular displacement o said axle relative to said reach member, said connecting means including relatively abutting members associated respectively with said reach member and axle, one of said abutting members having a plane surface and marginal portions rising therefrom, and the other abutting member contacting said plane surface and being fitted between said marginal portions, and means retaining said abutting members upon each other.

JAMES B. JARMIN. 

